What is the fault when the entire car has no power?
2 Answers
The reason why the entire car has no power may be due to a drained car battery or a circuit fault that prevents the battery's electricity from reaching the entire vehicle. The following is an introduction to car battery knowledge: 1. Definition: A car battery, also called a storage battery, is a type of battery. Its working principle is to convert chemical energy into electrical energy. Usually, the battery people refer to is a lead-acid battery. That is, a battery mainly made of lead and its oxides, with sulfuric acid solution as the electrolyte. 2. Lifespan: The normal service life varies from 1 to 8 years, which is greatly related to the condition of the vehicle. If the vehicle's alternator recharges normally and there is no leakage or grounding of electrical appliances, it can basically be used for more than 3 years.
My old Jetta also experienced a complete power loss situation, leaving me unable to even open the doors. Common causes are usually limited to a few possibilities: the battery has aged and can no longer hold a charge, or the reading light was left on and drained the battery. Another possibility is a faulty alternator that fails to charge the battery no matter how long you drive. Last week, I opened it up and found severe corrosion on the negative terminal—sanding it down and tightening it again fixed the issue. For long-term parking, it's especially important to pay attention; if the car isn't driven for three months, it's best to disconnect the negative terminal of the battery. For self-inspection, you can start by checking the color of the battery indicator light. If you have the tools, use a voltmeter to measure the cold cranking voltage—if it's below 11.8 volts, it's definitely a battery issue. Battery lifespan is generally only three to four years, so don't hesitate to replace it when the time comes.